monolithic track bed；solid bed；integrated ballast bed；monolithic concrete bed

flat-bed-integrated antenna

Integrated track circuit

intercalated bed

low pressure integrated bed

annual temperature difference between track bed slab and bed plate

Ballast Track Bed

elastic crossing tie embedded track bed

Elastic Monolithic Track Bed

Elastically monolithic track bed

Floating Track Bed

Monolithic Track Bed

monolithic track-bed

mononithic track bed

over-slurry of the track bed

Solid Track Bed

sub-rail track bed

Track Bed

underrail foundation；sub-rail foundation；sub-rail track bed